Impact of fly ash on monoethanolamine degradation during CO2 capture

Payal Chandan, Lisa Richburg, Saloni Bhatnagar, Joseph E. Remias, Kunlei Liu

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Fly ash contains varying amounts of transition metals depending on the fuel, combustion and also downstream emission control process. As certain transition metal ions are known to catalyze solvent degradation, the impact of fly ash is an important consideration for a post-combustion CO2 capture process. Here, five different fly ashes were screened with a representative carbon dioxide loaded aqueous monoethanolamine solution. The addition of fly ash has been found to impact oxidative degradation and product distribution significantly. Eight products have been identified and quantified by LC-TOF method. Some of the new products identified here contain a secondary amine group that could potentially nitrosate further. The rates of formation of these products were determined and found much higher with fly ash compared to MEA alone.

Original languageEnglish
Pages (from-to)102-108
Number of pages7
JournalInternational Journal of Greenhouse Gas Control
StatePublished - Jun 2014

Bibliographical note

Funding Information:
The authors acknowledge the Carbon Management Research Group (CMRG) members, including Duke Energy, East Kentucky Power Cooperative (EKPC) , Electric Power Research Institute (EPRI) , Kentucky Department of Energy Development and Independence (KY-DEDI) , Kentucky Power (AEP) , and LG&E and KU Energy , for their financial support. The authors would also like to thank Emily Harrison and Sarah Honchul for experimental and analytical assistance.


  • Degradation
  • Fly ash
  • Monoethanolamine
  • Oxidation
  • Rate enhancement

ASJC Scopus subject areas

  • Pollution
  • Energy (all)
  • Management, Monitoring, Policy and Law
  • Industrial and Manufacturing Engineering


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